Apparatus for removing bead cores from tires



1941- c. w. LEGUILLON 2,230,302

APPARATUS FOR REMOVING BEAD CORES FROM TIRES Filed NOV. 20, 1935 3 Sheets-Sheet 1 UL syui/[bn JUL/E7 727E 5/755/55 E Feb. 4, 1941 c. w. LEGUILLON APPARATUS FOR REMOVING BEAD CORES FROM TIRES 3 Shets-Sheet 2 Filed NOV. 20, 1935 M E infi 1 m 5 5m. 3

Zr/Ja [haw/E5 j I q j M 27 5- Feb. 4, 1941. c. w. LEGUILLON 2,230,302

APPARATUS FOR REMOVING BEAD CORES FROM TIRES Filed Nov. 20, 1935 3 Sheets-Sheet 3 IIIIIII/IIIIIIIIIIIIIIA IIIIIIIII/l/II JHL/E'YZDE [1555/55 ZZ/EZ syuiZ/an Patented .Feb. 4, 1941 v UNITED STATES PATENT OFFICE APPARATUS FOR REMOVING BEAD CORES FROM TIRES Charles W. Leguillon, Akron, Ohio, assignor to The B. F. Goodrich Company, New York, N. Y., a corporation of New York Application November 20, 1935, Serial No. 50,696

7 Claims. (Cl. 164-61) This invention relates to apparatus for remov rollers l8, I8, l8", for supporting the tread poring the bead cores from used pneumatic tire tion of the tire. These rolls cooperate with the casings. tractor belt to drive the tire upon its axis. Means Heretofore in the reclaiming of rubber and fabare also provided for feeding a pair of slitting l rlc material from used pneumatic tire casings it cutters I9, I9 (see Figs. 2 and 3) against the 5 has been customary completely to sever the bead bead portions of the tire. The apparatus may be portions from the tread and side walls of the described more in detailasfollows: casing,-and the rubberized fabric surrounding the For supporting the tire casing the pedestal |3 is metallic bead cores has been wasted. provided with a plate 2| having 'a rectangular The principal objects of this invention are .to opening formed therein. The carriage I6 is guid- 10 provide means for removing the bead cores withed along the vertical edges of the rectangular out waste of fabric and rubber material, and to opening by gibs 22, 22'. Guide rolls ll, H are provide efllciency, accuracy, and simplicity of op- Journaled in ears 23 formed on the carriage I6.

eration. Each roll is provided with a central portion of Other objects will appear from the following large diameter flanked by portions ll of reduced 15 description and the accompanying drawings. diameter on which the bead portions of the tire Of the drawings: rest.

Fig. 1 is a front elevation of the bead-slitting Where the tires are of such pl y t t y mechanism in its preferred form with a tire cascollapse before sufflcient pres ure s been eping in place thereon, part of the tire being broken plied thereto to drive them without slipp t 20 away to show the mechanism, th position f th rollers l8 are provided for contacting with the supporting mechanism when operating upon a. tread portion of the tire. These rolls l8 are also collapsed tire being shown in dot and dash lines. n d to rotate freely in bearings P v de Fig. 2 is a cross-sectional view taken on line t r and s pp t by t e arr a ezo 2-2 of Fig. 1, the positions of the tire when fiat- The rr 6 is a ta d to a p ston r d 24 25 tened, and the associated parts f th slitting having a piston 25 attached thereto. The piston mechanism when in their elevated positions, being 25 p es vertieally in a cylinder 25 which ay shown in dot and dash lines, parts of the apparabe pp With fluid under Pressure from y tus and of the tire being broken away. source, not shown, t ou a pipe 21, for rais Fig. 3 is a fragmentary sectional view taken the carriage. 80 on line 3-3 of Fig. 1. To support and drive the tractor belt 28, a pair Fig. 4 is a vertical sectional elevation of the 0f brackets are fixed t0 e p e a device used for removing the bead cores after the e formed With Vertical guideways- A pai o casing has been slit, parts of the pulling mechacarriages 3|, 3| are slidably mounted on the nism being broken away. brackets and may be raised or lowered by feed 35 Fig. 5 is a cross-sectional view of a, tire'casing screws 32, 32' journaled therein. The feed screws after the bead cores have been removed therehave spro ets fixed thereto and p from. et chain 34 engages both sprockets so "as to move Referring to the drawings, the numeral l0 desthe carriages in unison. A crank 35 is fixed to ignates a pneumatic tire casing having a pair of t e shaft 32' whereby the feed screws may be 40 metallic bead cores enclosed by layers of operated- Shlafi? 1S rotfltwbly unted in fixed fabric or cord. In practicing this invention anbearings on carriage 3|, whereas shaft I5 is journular slits l2, I2 (see Fig. 5) are progressively neled in a ea g 36 horizontally slidable in carformed through the plies of cord or fabric surriage 3| and retained by a coil spr g 31. Shait rounding the beads and the bead cores are rel4 has fixed t e e o a 'p of sprockets 38, 39, 45 moved through these slits. (see Fig. 2) and similar sprockets 40 are located The apparatus for slitting the tire casing prefon shaft I5. These sprockets engage chains 43, erably comprises a pedestal frame l3 which sup- 44 which are fastened together at spaced interports a .pair of parallel shafts l4, I5 which are vals by cross bars 45 which are equipped. with 60 horizontally disposed to drive a tractor belt teeth 46 for engaging the tread of the tire. Shaft adapted to conform to and contact with the tread 4 also has fixed thereto a sprocket a p to of the tire l0. A vertically movable carriage I6 be driven by a chain 48 from a sprocket 49 fixed is slidably mounted on the pedestal and carries to a shaft 50. Shaft 50 is journaled in a bearing idle. rolls l1, IT for supporting and guiding the 5| fixed to the pedestal l3, the arrangement being l6 bead portions of the tire and additional guide such that shaft I-4 may be raised and lowered without disengaging the drive. Shaft 501s driven by a chain 62 from a sprocket 53 fixed to the speed reducer 54 which in turn is driven by an electric motor, not shown.

By adjusting the crank 35, the tractor belt may be raised or lowered to primarily adjust the device to a certain size of tire, whereas the movement of the carriage l6 vertically is used for removing or replacing tires of substantially the same size.

The slitting mechanism is mounted on the carriage I6 and comprises a block vertically adjustable on the carriage l 6 and providing bearings for a right and left feed screw 6| (see Fig. 2), to which is fixed a hand-wheel 62. A pair of arms 63, 63' are threaded to engage rod 6|. and are provided with cutter holders 64, 64' adjustable thereon for supporting cutters l9, IS. A screw is provided to adjust the slitting device vertically with respect to the carriage I6.

In the operation of the slitting mechanism, carriage I6 is lowered and a tire casing is placed on the rolls l1, I1. press the casing against the tractor belt 28. As the tire is propelled by the tractor belt the handwheel 62 is manipulated to force the cutting discs i9, i9 through the outer layers of fabric to the metal head cores. The tire may then be removed by lowering the carriage l6.

After the casings have .been slit they are placed on the table 10 where the bead cores are removed. To hold the tires in place clamping mechanism is provided preferably comprising a cylinder II, located below the table and having a piston rod 12 adapted to extend through the table. The clamp head 13 is fixed to the upper end of the piston rod 12. The cylinder II is-supplied with pressure fluid from any convenient source, not shown, and is adapted to clamp one or more tire casings to the table as shown in Fig. 4. A sharply pointed hook I4 is attached to a pulling device above the table, preferably an air lift 15. The tire is clamped by its side wall and tread portions so as to expose its bead portions. When the hook I4 is engaged about the head portion of a tire and the lift 15 is energized, the hook tears its way through the head portion at its point of engagement and due to the slit formed adjacent the bead cores, the beads are pulled from the casing through the slit. After the bead cores have been removed the tire casing appears as shown in Fig.5.

I claim:

1. Apparatus for removing bead cores from used pneumatic tire casings, said apparatus comprising means for supporting the casing from within, means adapted to contact with the tread of the casing to rotate the casing about its axis,

The carriage I6 is raised to and means for progressively slitting the plies overlying the bead cores as the casing is rotated.

2. Apparatus for removing bead cores from used pneumatic tire casings, said apparatus comprising means for supporting the casing from within, a tractor belt adapted to contact with the tread of the casing to rotate the casing about its axis, and means for progressively slitting the plies overlying the bead cores as the casing is rotated. g;

3. Apparatus for removing bead cores from used pneumatic tire casings, said apparatus comprising roller means forsupporting the casing from within, means adapted to contact with the tread of the casing to rotate the casing about its axis, and means for progressively slitting the plies overlying the bead cores as the casing is rotated; v

4. Apparatus for removing bead cores from used pneumatic tire casings, said apparatus comprising driving means adapted to contact with the tread of the casing, roller means for engaging the bead portions of the casing, means for pressing the roller means toward said driving means to rotate the casing about its axis, and means for progressively slitting the plies overlying the bead cores as the casing is rotated.

5. Apparatus for removing bead cores from used pneumatic tire casings, said apparatus comprising a driving belt adapted to conform to the tread of the casing and frictionally to rotate the casing about its axis, anti-friction pressing means for contacting with the bead portions of the casing to guide the same, and slitting means adapted progressively to slit the plies overlying the bead cores as the casing is rotated.

6. Apparatus for removing bead cores from used pneumatic tire casings, said apparatus comprising a driving belt adapted to conform to the tread of the casing and frictionally to rotate the casing about its axis, roller means for supporting the beads of the tire in spaced relation and pressing the casing against the driving belt, and slitting means adapted progressively to slit the plies overlying the bead cores as the casing is rotated.

7. Apparatus for removing bead cores from used pneumatic tire casings, said apparatus comprising belt means for contacting with the tread portion of the casing to drive the casing about its axis, a carriage movable toward and from the belt and adapted to press the casing against the belt, rollers carried by the carriage for engaging the casing, a pair of slitting cutters for slitting the plies of the casing overlying the bead cores, and feeding means supported by the carriage for forcing the cutters against the casing CHARLES W. LEGUILLON. 

